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LG 32LT670H-UA - User Manual

LG 32LT670H-UA
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Printed in KoreaP/NO : MFL67449109 (1207-REV00)
CHASSIS : LA2AF
MODEL : 32LT670H 32LT670H-UA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LCD TV
SERVICE MANUAL
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only

Questions and Answers

  • T
    Tina JimenezAug 4, 2025
    What to do if my LG LCD TV fails to power up?
    • M
      Michael HolmesAug 4, 2025
      If your LG LCD TV fails to power up, start by inspecting the P401 power connector. If the connector is okay, consider replacing the Power Board. Also, check the Q409 application circuit and the Q409 output Voltage (12V), replacing Q409 if necessary. Inspect the LVDS Cable and replace it, if needed. Finally, check the LCD Module Control board.
  • J
    Jon ValdezAug 11, 2025
    What to do if composite video is not working on my LG LCD TV?
    • N
      Nicholas HallAug 11, 2025
      If you're experiencing issues with composite video on your LG LCD TV, begin by inspecting the AC cable for any damage or open conductors. Then, check JK1700 and replace it if necessary. Check the input of Mstar(IC101). Measure waveform at C217 because it’s more easy to check. If problems persist, and after rechecking all paths, consider replacing the Mstar chip.
  • J
    Joshua GeorgeAug 19, 2025
    What to do if analog RF video is not working on my LG 32LT670H-UA LCD TV?
    • A
      andrew15Aug 19, 2025
      If you are experiencing issues with analog RF video on your LG LCD TV, check TU3001 Pin7 and consider replacing the tuner. Also, check the tuner's 5V power at L3000 and inspect IC5000, replacing IC5000 if needed. Check the tuner's 3.3V power at L3001 and replace L3001 if necessary. Check the tuner's 1.8V power at IC3000, ensuring 2pin : 1.8V, and replace IC3000 if needed. Finally, check the Mstar LVDS output and replace IC101 if necessary.
  • R
    Robert VazquezAug 27, 2025
    What to do if digital RF is not working on my LG 32LT670H-UA?
    • M
      mark14Aug 27, 2025
      If you're having trouble with the digital RF on your LG LCD TV, check the tuner's 5V power at L3000 and inspect IC5000, replacing IC5000 if necessary. Also, check the IIC Signal and replace TU3001 at pins #3 and #4. Check the DIF Signal and replace TU3001 at pins #10 and #11. Finally, check X201 and replace X201 and its application circuit.

Summary

PRODUCT SAFETY

AC Leakage Current Checks

Procedures for cold and hot AC leakage current testing.

ADJUSTMENT INSTRUCTION

Board Level Adjustment Details

Explains the ADC adjustment procedure.

Final Assembly Adjustments

Covers white balance and other final adjustments.

TROUBLESHOOTING

Boot & Display Troubleshooting

Guides for power-up boot failures and OSD problems.

RF Video Troubleshooting

Guides for analog RF video problems.

Digital RF Video Troubleshooting

Guide for digital RF video problems.

SCHEMATIC CIRCUIT DIAGRAM

LG 32LT670H-UA Specifications

General IconGeneral
Screen Size32 inches
Resolution1366 x 768
Display TypeLCD
HDMI Ports3
USB Ports1
Smart TVYes
Refresh Rate60Hz
Aspect Ratio16:9
Sound Output20W
InputsHDMI, USB, Composite
Audio Output10W x 2

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